Today = new Date();
TodayDay = Today.getDate();
TodayMon = Today.getMonth();
TodayYear = Today.getYear();
if (TodayYear < 2000) TodayYear += 1900;

DayofYear = TodayDay;

switch (TodayMon) {
case 0: break;
case 1: DayofYear += 31; break;
case 2: DayofYear += 59; break;
case 3: DayofYear += 90; break;
case 4: DayofYear += 120; break;
case 5: DayofYear += 151; break;
case 6: DayofYear += 181; break;
case 7: DayofYear += 212; break;
case 8: DayofYear += 243; break;
case 9: DayofYear += 273; break;
case 10: DayofYear += 304; break;
case 11: DayofYear += 334; break;
}